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Method for making pulp by using plant fiber as raw material

A plant fiber and raw material technology, applied in the field of pulp manufacturing, can solve a large amount of waste water, waste residue, waste gas, environmental pollution and other problems, and achieve the effect of ensuring quality and yield, mild reaction conditions, and integrity

Active Publication Date: 2019-09-06
山东木合纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, these pulping methods need to add a large amount of chemical substances, such as lime, caustic soda, soda sulfide, sulfite, etc., as cooking agents, and the fiber raw materials are cooked at a relatively high temperature and pressure. A large amount of waste water, waste residue and waste gas will be generated, which will seriously pollute the environment

Method used

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  • Method for making pulp by using plant fiber as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of method that uses plant fiber as raw material to manufacture paper pulp, comprises the following steps:

[0027] (1) Cleaning: After cleaning the dust and other sundries on the surface of 1000kg reeds with clear water, filter out the moisture;

[0028] (2) thread rubbing: put the cleaned reed into a thread rubbing machine to obtain a filamentous product;

[0029] (3) Reaction: Add 4000kg of 15wt% pepsin aqueous solution to the filamentous product, then react at normal temperature and pressure for 15 hours, and obtain the reacted material after the reaction is completed;

[0030] (4) Squeeze: Squeeze the reacted material until solid-liquid separation, obtain the squeezed filament, and reclaim the squeezed mother liquor;

[0031] (5) Grinding: send the squeezed filaments to a refiner for grinding, and obtain the undersize after being screened by a sieve with an aperture of 0.7mm, and the oversize returns to the refiner for repeated grinding and screening until t...

Embodiment 2

[0034] A kind of method that uses plant fiber as raw material to manufacture paper pulp, comprises the following steps:

[0035] (1) Cleaning: After cleaning the dust and other sundries on the surface of 1000kg reeds with clear water, filter out the moisture;

[0036] (2) thread rubbing: put the cleaned reed into a thread rubbing machine to obtain a filamentous product;

[0037] (3) Reaction: Add 8000kg of 10wt% pepsin aqueous solution to the filamentous product, then react at normal temperature and pressure for 15 hours, and obtain the reacted material after the reaction is completed;

[0038] (4) Squeeze: Squeeze the reacted material until solid-liquid separation, obtain the squeezed filament, and reclaim the squeezed mother liquor;

[0039] (5) Grinding: send the squeezed filaments to the refiner for grinding, and obtain the undersize after being screened by a sieving machine with an aperture of 0.8mm, and the oversize returns to the refiner for repeated grinding and scree...

Embodiment 3

[0042] A kind of method that uses plant fiber as raw material to manufacture paper pulp, comprises the following steps:

[0043] (1) Cleaning: After cleaning the dust and other sundries on the surface of 1000kg reeds with clear water, filter out the moisture;

[0044] (2) thread rubbing: put the cleaned reed into a thread rubbing machine to obtain a filamentous product;

[0045] (3) Reaction: Add 10000kg of 6wt% pepsin aqueous solution to the filamentous product, then react at normal temperature and pressure for 6 hours, and obtain the reacted material after the reaction is completed;

[0046] (4) Squeeze: Squeeze the reacted material until solid-liquid separation, obtain the squeezed filament, and reclaim the squeezed mother liquor;

[0047] (5) Grinding: send the squeezed filaments to the refiner for grinding, and obtain the undersize after being screened by a sieving machine with an aperture of 0.8mm, and the oversize returns to the refiner for repeated grinding and screen...

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Abstract

The invention belongs to the field of pulp making, and particularly relates to a method for making pulp by using plant fiber as the raw material. The method includes the process steps of cleaning, filament rolling, hydrolysis reaction, pressing, grinding and pulping. By adopting a protease aqueous solution to carry out hydrolysis reaction on the plant fiber to hydrolyze the lignin structure, the integrity of the linear macromolecules of the plant fiber can be guranateed to the greatest extent, and the quality of the product is guranateed; meanwhile, the protease aqueous solution can be recycled. According to the method, high temperature and high pressure are not required in the whole pulp production process, and thus the danger of operation is avoided; the whole process can achieve zero discharge of sewage, has no pollution to the environment, and promotes energy conservation and environment protection.

Description

technical field [0001] The invention belongs to the field of pulp production, and in particular relates to a method for producing pulp by using plant fiber as a raw material. Background technique [0002] The paper industry is an industry that manufactures various types of paper products. The paper industry is an important industry closely related to the development of the national economy. It involves forestry, agriculture, machinery manufacturing, chemical industry, electrical automation, transportation, environmental protection and other industries. At the same time, the paper industry is a technology-intensive, complex process, large resource consumption, and a lot of pollutants. The product range of the industry includes pulp, machine-made paper and cardboard, processed paper, handmade paper, etc. [0003] In recent years, my country has become a big country in the production, consumption and trade of the paper industry, and the paper production is increasing at a rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/02D21B1/06D21C5/00D21C9/18D21D5/00D21H11/00D21H11/12
CPCD21B1/023D21B1/06D21C5/005D21C9/18D21B1/063D21D5/00D21H11/00D21H11/12Y02W30/64
Inventor 梁秀珍
Owner 山东木合纤维有限公司
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